"""
    python代码的练习
"""

"""
# int float string
# 整数  浮点数  字符串
# 整数666
a = 666
# 浮点数
b = 13.14
print(a)
print(b)
print(666)
print(13.14)
# 梦开始的地方
print("Hello world!")
"""

"""
# 变量的使用
a = 50
a -= 10
print(a)
"""

"""
# type()函数 --- 查看数据类型
a = 10
b = 2.2
c = "mihoyo"
print(type(a))
print(type(b))
print(type(c))
"""

"""

# 数据类型转换
# 都可以转换成字符串
# 字符串只有全是数字才能转换为int / float

a = 10
b = float(a)
print(type(b), b)

c = "1234"
d = int(c)
print(type(d), d)

m = 1.2
n = int(m)
print(type(n), n)
"""

"""
n = input()
m = n + 32
print(m)
"""

"""

# 运算符 + - * / ** //
# / 默认为浮点数的操作
# ** x ** y x的y次方
# // 整除
n = 8
print(n+6)
print(n-6)
print(n*6)
print(n/4)
print(n/3)
print(n//3)
print(n**2)
"""

"""

# 字符串的三种表示方式
n = "haha"
m = 'hehe'
# 三个双引号也可以
print(n)
print(m)
print(k)

o = "'haha'"
p = '"aaa"'
q = "\"go go go \""
print(o)
print(p)
print(q)
"""


"""
# 字符串的拼接
a = "Hello"
b = "world"
print("niha " + a, b + " haha")
print("这是什么 ", a + b)
"""

"""
x = int(input("输入数字"))
y = int(input("输入数字"))
print(x*y)
"""

"""
n = input()
print(type(n))
"""

"""
x = int(input())
y = int(input())
print(x // y)
print(x % y)
"""

"""
# bool类型 True False
a = True
b = False
print(type(a))
print(type(b))
# len函数可以求字符串的长度
a = "Hello world!"
print(len(a))
"""

# "a = 10"
# f-string 格式化字符串  可以在{}里面加入变量和表达式
# a = 10
# print(f"a = {a}")
# print(f"a = {a + 10}")

# 输入四个小数，求四个小数的平均值

# a = input("你输入的第一个数字是 ")
# b = input("你输入的第二个数字是 ")
# c = input("你输入的第三个数字是 ")
# d = input("你输入的第四个数字是 ")
#
# a = float(a)
# b = float(b)
# c = float(c)
# d = float(d)
#
# avg = (a + b + c + d) / 4
# print(f"这四个数字的平均值为{avg}")

# 抛出异常前面的代码可以实现，后面的代码不能实现
# print(111)
# print(10 / 0)
# print(222)

# print(2 ** 0.5)

# 关系运算符对应的表达式的值是布尔类型
# a = 10
# b = 20
# print(type(a < b))
#
# print(a < b)
# print(a > b)

# print(0.1+0.2)


# 逻辑运算符  and or not
# a = 10
# b = 20
# c = 30
# print(a < b < c)
# print(a > b and c > b)
# print(a > b or c > b)
# print(not a > b)
# print(not a < b)

# 多元赋值  a,b = 1,2   a =1   b = 2
# a,b = 10,20
# print(a,b)
# # 交换a,b的值
# a,b = b,a
# print(a,b)


# a = 10
# b = True
# c = False
# print(a + b)
# print(a + c)


# a:int = 10
# print(a)


# def q():
#     u = int(input())
#     t = float(input())
#     Q = 1.0218*(10**(-14))/u/((t*(1+0.0219*t**0.5))*10**1.5)
#     return Q
# Q = 0
# Q = q()
# print(Q)

# u = int(input())
#
# t = float(input())
# Q = 1.0218*(10**(-14))/u*((t*(1+0.0219*t**0.5))**1.5)
# print(Q );

# n = int(input())
# n = n ** -2;
# n = 10/2/5;
# print(n)
#
# Q = 1.0218 * 10 ** -14 / u / ((t * (1 + 0.0219 * t ** 0.5))  ** 1.5)

s = "999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999"
print(s)
n = int(s)
print(n)
